Improvement in heaters for kettles



1. VAN.

Heaters for Kettles Patented April 7,1874.

FIG-1 IJWICT. 2

UNITED STATES PATENT OFFICE JOHN VAN, OF CINCINNATI, OHIO.

IMPROVEMENT IN HEATERS FOR KETTLES.

Specification forming part of Letters Patent No. 149,361, dated April 7, 1874; application filed March 5, 1874.

To all whom it may concern:

Be it known that I, JOHN VAN, of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Heater for Kettles, of which the following is a specification:

My invention relates to a heating device adapted for attachment within an ordinary kettle or boiler; and consists, essentially, of a bulb or chamber ot peculiar form, having two tubular or hollow legs, by which it is held in place within the boiler, and through which it receives steam and discharges water oi' -condensation, respectively. It also consists in washers for strengthening the portion of the legs passing through the bottom of the kettle.

Figures l and 2 are complementary axial sections of a kettle provided with my improved heater. Fig. 3 is an enlz rged axial section of a heater adapted for attachment to a common kettle, part of which is shown. Fig. et shows the same heater detached.

A represents a kettle, which ditiers from the common form only in having attened portions a a', pierced to receive the hollow legs or stems B B' of the peculiarly-shaped bulb or chamber C, whose form exteriorly is convex and lobed above, andconcave below, so as, with said legs, to approximate the form of an arch. Each leg has a collar, b, which rests upon the ledge a, and each projects downward through the kettie-bottom, and is screw-threaded for a fastening nut or nuts, I). This duplex form of supporting-stems leaves the central part of the kettle-bottom at liberty for attachment of the common discharge-faucet E in its usual and proper place, to wit, the lowest part of the kettle, so as, when opened, to thoroughly drain the same.

My heater may be readily applied to old kettles, or those of the common form, (see Fig. 3,) by making two holes in the same for the screwthreaded prolongations ofthe legs and applying, inside and outside ofthe kettle, washers F F', Fig. 3, of soft metal, having oblique faces f, adapted to iit the copper.

Gr shows a steam-supply cock 5 I-I, servicepipe 5 I, discharge-pipe.

The arched and scalloped form of the bulb combine large radiating-surface with great strength. The duplex form of stem enables the heater to be easily and cheaply attached to any kettle without interference with its discharge-cock, and provides a passage for escaping water of condensation and spent steam unopposed by the entering or live steam.

My attachment can be readily removed and the small perforations easily stopped.

My attachment is complete in itself, and may be a special article of manufacture and sale, for use in any kettle or boiler.

I claim as new and of my inventionl. In combination with a kettle or boiler, the removable scalloped bulb C, having hollow supporting-legs B B', substantially as and for the purpose speciied.

2. In combination with the attachment O B B', the removable washers F F', substantially as set forth.

3. In combination with the two-legged heater B B O, the chamfered washers F F', to enable its attachment to a common boiler, in the manner explained.

In testimony of which invention I hereunto set my hand..

JOHN VAN.

Attest GEO. H. KNIGHT, S. B. SPEAR. 

